What is a “Plug”?

For some reason, I have been reading and thinking about forecasting for the last little while. One of the words that seems to be popping up more and more frequently in the business literature with respect to forecasting is the word “plug”. I have actually heard this word in past forecasting meetings that I have attended. I thought I might delve in a level deeper than just understanding forecasting, and look into one of the more favored words in the forecasting vernacular: “plug”.

Plug is an interesting word. The dictionary defines it as both a noun (a thing) and a verb (an action). I’ve also talked about words like this before. You used to go to a party, and now you can also go and party. I think that plug is a much earlier iteration of this particular phenomena. Usually a word is used as either a noun or a verb. I am not so sure that this is the case with the word plug when it comes to its business usage. I think that when you hear the word “plug” in business, it is both a thing and an action at the same time.

As a noun plug can usually mean either:

“an obstruction blocking a hole, pipe, etc.” or “a device for making an electrical connection, especially between an appliance and a power supply…”.

As a verb Plug can usually mean either:

“block or fill in (a hole or cavity)” or “mention (a product, event, or establishment) publicly in order to promote it.”

For now, I think I’ll ignore the appliance power cord and product promotion definitions for obvious reasons, and focus on the other two.

As the ends of various months, quarters, and years come into view, forecasting takes on a role of increased importance. Depending on the business performance, as these end of period times roll around forecasting can take on both a greater frequency and intensity, especially if the numbers are not in management’s desired range. As I have noted, forecasting is essentially the comparing of what you think the numbers are going to be with what you want the numbers to be.

I have also noted the “volumetric force” associated with forecasts. This is the management drive and desire for all forecasts to be either at or exceeding the desired targets. This desire to respond to or please management has a tendency to render forecasts possibly slightly more optimistic than what they might normally be, so that management can smile. But what do you do when the forecast obviously does not meet the desired levels?

You insert what is called a plug into the forecast.

You find a way to provide the management desired levels in the forecast numbers. You forecast the performance that is defined, and then you add in an amount equal to the difference between the goal and the defined forecast, which is undefined. This undefined amount is known as the “plug”.

You are in effect using the verb definition of the word “plug” as a noun. You are essentially filling a hole (a verb) in the forecast with a plug (a thing). It is normally the noun function that is turned into a verb, but here we have the verb function that is turned into a noun.

I guess it is a little thing (a very little thing) but it amuses me, so I have included it.

I have also noted in the past that if a forecast is knowingly presented to management, and it does not at least meet the desired targets, that whoever submits such a lacking forecast could be subject to a significant amount of incremental management attention and assistance. As I also noted this attention and assistance will usually continue until the forecast realigns with the desired targets.

The quicker the plug is inserted into the forecast; the faster management can feel better about the forecast.

I think this may somehow be related to the genesis of the saying “The beatings will continue until morale improves.” This quote is attributed to Captain Bligh, or the HMS Bounty, when told of the forecast associated with how the crew felt about reaching Pitcairn’s Island. It is also apparently quite applicable to a multitude of other management groups.

Plugs were developed in forecasts as a way to create a real and accurate forecast (that potentially does not meet management expectations), yet also provide an acknowledgement of the expectations of management in order to avoid the incremental assistance of management. Plugs are the as yet unidentified portion of a forecast, that will (hopefully) be defined in the future, and will result in the meeting of the desired targets.

This results in the equation:

Actual Forecast + Unidentified Forecast (Plug) = Presented Forecast

Plugs are an acknowledgement that the actual forecast doesn’t meet the desired levels, but the miss to forecast has been identified and is being worked, so that extra management reviews of the forecast (or beatings, as the case may be) are not going to be necessary.

On the surface, this type of forecasting technique sounds great. The actual forecast can be presented to management, as well as the desired number that management wants to see. They get both reality and what they want.

However, if you are going to use the Plug Gambit in a forecast, you need to understand that it is a double-edged sword, and it has a limited shelf life. It is a double-edged sword in that a forecast is being presented to management that is in essence telling them that their desired number is going to be achieved. If it is not, then there will be significant, and now merited management attention visited upon those that delivered such a faulty forecast.

The plug in a forecast also has a limited shelf life in that it is expected to reduce as time passes, and the measurement period draws to a close. An example is that a plug in a forecast during the first month of a three-month quarter might be acceptable. However, the same plug in the third month of a quarter should definitely garner incremental management attention.

So, there you have it. A plug is an artifice, inserted into a forecast in order to avoid (at least temporarily) unwanted incremental management attention associated with the forecast. It is an identified amount, but from an unidentified source. It can be sales to unidentified customers, or cost reduction from unidentified actions.

Once a plug has been inserted into a forecast, it is almost impossible to improve the level of the forecast. This is because as new opportunities are identified, they reduce the amount of the plug, as opposed to actually improving the forecast.

With this in mind, it is my understanding that the latest management approach to limiting the use of plugs in forecast is to in fact request and drive for improvements to any forecast that does contain a plug. This has the effect of requiring double the desired growth as the plug must first be filled before the forecast can be increased. This move by management will no doubt engender some as yet unknown, new methodology for forecasting, as the ongoing escalation associated with business forecasting continues.

This is very similar to the idea that the fastest cheetahs only caught the slowest gazelles. This natural selection meant that only the fastest gazelles (and cheetahs) survived. The ongoing evolutionary race is forecasted to continue going forward on the African Savannah.

However, I think it is pretty obvious that in this example, gazelles do not get to insert plugs into their speed forecast.